# IISER Exam Model Papers 2 : Mathematics

**IISER Exam Model Papers 2 : **Mathematics

**31. The equations of two lines are x + 2y = 1 and 2x − y = 3.**

A. These lines are parallel.

B. These lines are perpendicular.

C. These lines are at an angle of 60^{◦}

D. These lines are at an angle of 30^{◦}

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